/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#pragma once

#include <iostream>

#include "io/InputStream.hh"
#include "orc/OrcFile.hh"

namespace orc {
class MemoryInputStream : public InputStream {
public:
    MemoryInputStream(const char* _buffer, size_t _size)
            : buffer(_buffer), size(_size), naturalReadSize(1024), name("MemoryInputStream") {}

    ~MemoryInputStream() override;

    virtual uint64_t getLength() const override { return size; }

    virtual uint64_t getNaturalReadSize() const override { return naturalReadSize; }

    virtual void read(void* buf, uint64_t length, uint64_t offset) override { memcpy(buf, buffer + offset, length); }

    virtual const std::string& getName() const override { return name; }

    const char* getData() const { return buffer; }

private:
    const char* buffer;
    uint64_t size, naturalReadSize;
    std::string name;
};
} // namespace orc
